Core-tip-truing machine



Nov. 9 1926.

E. LARBALESTER CORE TIP TRUING MACHINE Filed NOV. 5. 1925 INVENTUR-Patented Nov. 9, 1926.

UNITED STATES 1,606,372 Parent @FHQ-El.

ERNEST LARBALES'IER, OF FORT WILLIAM, ONTARIO, CANADA, ASSIGNOR TO FORTWILLIAM PAPER 00., LIMITED, OF FORT WILLIAM, PROVINCE OF ONTARIO,

CANADA.

GORE-TIP-TRUING MACHINE.

Application filed. November It is common in the paper making industry toemploy tubular paper cores which are provided with annular sheet metaltips of U-section which frequently require to be removed and trued upfor reuse and this invention has relation to certain new and usefulimprovements in a core tip truing machine and has for its primary objectthe provision of a machine of simple construction which will be highlyefiicient in the straightening and truing of core tips such as referredto.

With the foregoing and other objects in view, as will appear as thedescription proceeds, the invention consists of the novel construction,combination and arrangement of co-operating elements as hereinafter morespecifically set forth and illustrated in the accompanying drawingsforming a part of the present application and which may be brieflydescribed as follows:

Fig. 1 is a front elevation of the machine showing it at the top of thestroke of the actuating mechanism.

Fig. 2 is a side elevation of the machine showing it at the top of thestroke of the actuating mechanism.

Fig. 3 is a vertical transverse section through the machine,substantially on the plane of the line 3-3 of Fig. 2, looking in thedirection indicated by the arrows and showing a core tip in position inthe truing device with the actuating mechanism at the bottom of itsstroke.

Referring more in detail to the drawings in which similar referencecharacters designate corresponding parts throughout the several views,it will be noted that the machine includes:

A supporting frame structure 10 on which are attached the cylinder 11 ofthe actuating mechanism by means of the bracket 34 and ,the annularbottom "die 12 of the truing device by means of the lugs-35 as shown inFigs. 1 and 2. The top die 14 of the truing device is connected to andactuated by the piston 15 by means of the piston rod 16. This top die isformed with an annular groove to fit over a core tip as shown.

The cylinder 11 is made air-tight or fluidtight by means of the stufiingboxes 17 and 18. The piston 15 is secured to the piston rod 16 by meansof the nut 19 or other mechanical contrivance and is actuated by air 5,1925. Serial No. 67,070.

or other fluid admitted into cylinder 11 through either pipes20 or 21 asdesired. The admission of airinto the pipes 20 and 2lis controlled bythe four way valve 22, or

which are secured to the cross bar 25 which is movable in slots in theside of the annular bottom die and supports the stripping mem ber 13.Nuts 28 are threaded on the upper ends of the rods and shoulders 24 arepro vided on the rodsbelow the stop bar.

Considering now the mechanism with the piston 15 at its top position asshown in Fig. 2: The core tipis placed on the annular bottom die 12. Thevalve 22 is now opened and the piston 15 is actuated downwards, thismotion allowing the rods 23 to also move downwards carrying with themthe stripping block 13 which is supported by the bar 25. When the topdie 14 has moved down sufficiently it begins to force the core tip 26over the bottom die 12 until the dies and tip take up the relativepositions shown in Fig. 3. In this, the bottom position of themechanism, the piston is not allowed to 'move farther downwards sincethe stop bar 27 rests against the shoulders '24 of the rods 23.

Now, again, on the upstroke of the piston 15, controlled by the valve22, the core tip 26 strips off in one of two ways. it either remains inthe top die 14 or on the bottom die 12. If the core tip remains on thebottom die 12 when the stop bar 27 strikes the nuts '28 of the rods 23.the rods 23 and hence the bar 25 are impelled upwards in the slot 31.This motion of the bar 251mm thestripping block 13 upwards and thisaction strips the core tip 26. the block 13 returning to its originalposition as shown in Fig. 2, when IUU the stripping pins 29 come intoaction and completely eject the'core tip. The die lt finally comes torest in position as shown in Fig. 2 when the guide tubes 30 are stoppedby striking against the cap 32 or s'omeother stopping device.

The stripping block 13 is recessed and drilled to allow dirt, etc, whichmight collect from the core tips. to escape, so that it can not build upa pressure orjam any of the working parts. The piston 15 is soconstructed thatthe' packing pieces 36n1al e it fluid tight within thecylinder.

It is believed the complete construction and operation of the machinewill now be understood from the foregoing description taken inconjunction with the accompanying drawings. The construction andoperation of the machine as designed assures quick and properstraightening and truing of the core tips and at a considerable savingof time, energy and expense over the slow and expensive practice ofstraightening and trui'ng the core tips by hand as heretofore followed.I

lVhile the preferred embodimentof the invention has been disclosed it isto be understood that minor changes in the details of construction,combination; arrangement of co-operating elements; and actuating fluidsor materials may be resorted to within the scope of Whatis claimed,without departing from the spirit of the invention and more particularlyin regard to the construction of the supporting frame structure 10 andof the method employed in connecting the cylinder 11 and bottom die'12to the aforesaid frame structure.

What- I claim is: v

1. Core-tip straightening and truing m chanism comprising a male die ofannular form adapted to enter the channel of a core tip; a female diegrooved to fit over the core tip; means for reciprocating one dierelative to the other; a stripping member movable longitudinally of themale die; stripper pins secured to a stationary part adapted't'o operatethrough the bottom of the female die; positive connections whereby theseparation otthe dies will actuate the stripping member, lost motionbeingprovided in such connections and the stripper pins so located thatneither of the stripping means operatively engages the core tip untilthe dies are sufficiently separated for the removal of a core tip frombetween them.

2. Core-tip straightening and truing mechanism comprising a bottomannulardie adapted to enter the channel of a core tip; a

top die, grooved to fit over the core tip;

means for reciprocating one die relative to theother; means forstripping a tip from the bottom die comprising a strippingmember movablelongitudinally of tlieannular die; a cross-bar adapted to move saidstripping member; and connecting means between the cross-bar and the topdie adapted to lift the cross-bar when the dies are separated.

3. Core-tip straightening and truing mechanism comprising bottomanni'il'ar die adapted to enter the channel of a core tip; a top diegrooved to fit over the core tip; meansfor reciprocating one dierelative to tli other; means for stripping a tip from the bottom diecomprising a stripping member movable longitudinally of the annular die;a cross-bar adapted to move said stripping member; and connecting meansbetween the cross-bar and the top die adapted to lift the cross-bar whenthe dies are separated; including provision for lost motion.

at. Core-tip straightening and mechanism comprising a bottom annular dieadapted to enter the channel of a core tip; a top die grooved to fitover the core tip; means tor'reciprocating one die relative to theother; means for stripping a tip from the bottom die comprising astripping member movable longitudinally of the anniilai die; a cross-baradapted to move said stripping member; rodssecured to the cross-bar; astop bar connected to the top. die provided with openings through whichthe rods pass; stop shoulders on the rods enga-geable by the stop bar tolimit the movement of the dies towards one another; and shouldersengageable by the stop bar to move the crossbar and stripper when thedies are moved apart.

5. Core-tip straightening and truing mechanism comprising a bottomannular die adapted to enter the channel of a core tip; a top diegrooved to lit over thecore tip; a piston rod to which the top die isconnected; a piston to which the piston rod is connected;- a cylinderfor said piston; a stripping member movable longitudinally of theannular die; a cross-bar adapted to move said stripping member, the wallof the annular die being slotted to permit of thenecessary movement ofthe bar longitudinally of'the die; rods secured to the cross-bar; a stopbar connected to the top die provided with openings through which therods pass; stop shoulders on the rods engageable by the stop bar tolimit the movementof the dies towards one another; and shouldersengageable by the stop bar to move the crossbar 'and stripper when thediesare moved apart.

6. Core-tip straightening and truing mechanism 7 comprising a bottomannular die adapted to enter the channel'of a'core tip; a top diegrooved-to fit over the core tip; a piston rod to which the top dieisconnected; a piston to which-the piston rod is connected; a cylinder'forsaid piston; a stripping member movable longitudinally of theannular die; a cross-bar adapted to move said stripping member; the wallof truingthe annular die being slotted to permit of the necessarymovement of the bar longitudinally of the die; rods secured to thecrossbar; a stop bar connected to the top die provided with openingsthrough which the rods pass; stop shoulders on the rods engageable bythe stop bar to limit the movement of the dies towards one another;shoulders engageable by the stop bar to move the cross-bar and stripperwhen the dies are moved apart; and stationary stripper pins connectedwith the cylinder, the top die having holes therein through which thepins may operate when the two dies are moved apart.

7. Core-tip straightening and truing mechanism comprising a bottomannular die adapted to enter the channel of a core tip; a top diegrooved to fit over the core tip;

a piston rod to which the top die is connected; a piston to which thepiston rod is connected; a cylinder for said piston; rods secured to thecross-bar; a stop bar connected to the top die provided with openingsthrough which the rods pass; stop shoulders on the rods engageable bythe stop bar to limit the movement of the dies towards one another;shoulders engageable by the stop bar to move the cross-bar and stripperwhen the dies are moved apart; and stationary stripper pins connectedwith the cylinder, the top die having holes therein through which thepins may operate when the two dies are moved apart.

Signed at Fort William, Ont. this 7th day of October 1925.

ERNEST LARBALESTER.

